fs/btrfs/fs.h

1 /* SPDX-License-Identifier: GPL-2.0 */
10 #include "extent-io-tree.h"
12 #include "async-thread.h"
13 #include "block-rsv.h"
46  * Runtime (in-memory) states of filesystem
63 	/* The btrfs_fs_info created for self-tests */
254 	/* Seconds since 1-Jan-1970 */
256 	/* Seconds since 1-Jan-1970 */
360 	/* The maximum commit duration so far in ns */
362 	/* The last commit duration in ns */
364 	/* The total commit duration in ns */
401 	/* logical->physical extent mapping */
453 	 * extent. The write side(mount/remount) is under ->s_umount lock,
500 	 * function happens to be doing non-waiting preflush before jumping
536 	/* This is used to protect the following list -- ordered_roots. */
602 	 * The space_info list is effectively read only after initial setup.
717 	/* Entries are eb->start / sectorsize */
802 	 * Last generation where we dropped a non-relocation root.
834 	return READ_ONCE(fs_info->generation);  in btrfs_get_fs_generation()
839 	WRITE_ONCE(fs_info->generation, gen);  in btrfs_set_fs_generation()
844 	return READ_ONCE(fs_info->last_trans_committed);  in btrfs_get_last_trans_committed()
849 	WRITE_ONCE(fs_info->last_trans_committed, gen);  in btrfs_set_last_trans_committed()
855 	WRITE_ONCE(fs_info->last_root_drop_gen, gen);  in btrfs_set_last_root_drop_gen()
860 	return READ_ONCE(fs_info->last_root_drop_gen);  in btrfs_get_last_root_drop_gen()
870 	const u64 num_csums = csum_bytes >> fs_info->sectorsize_bits;  in btrfs_csum_bytes_to_leaves()
872 	return DIV_ROUND_UP_ULL(num_csums, fs_info->csums_per_leaf);  in btrfs_csum_bytes_to_leaves()
882 	return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * 2 * num_items;  in btrfs_calc_insert_metadata_size()
892 	return (u64)fs_info->nodesize * BTRFS_MAX_LEVEL * num_items;  in btrfs_calc_metadata_size()
895 #define BTRFS_MAX_EXTENT_ITEM_SIZE(r) ((BTRFS_LEAF_DATA_SIZE(r->fs_info) >> 4) - \
900 	return IS_ENABLED(CONFIG_BLK_DEV_ZONED) && fs_info->zone_size > 0;  in btrfs_is_zoned()
904  * Count how many fs_info->max_extent_size cover the @size
910 		return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE);  in count_max_extents()
913 	return div_u64(size + fs_info->max_extent_size - 1, fs_info->max_extent_size);  in count_max_extents()
936 	(!!(btrfs_super_incompat_flags((fs_info)->super_copy) & (flags)))
939 	(!!(btrfs_super_compat_ro_flags((fs_info)->super_copy) & (flags)))
962 #define btrfs_test_opt(fs_info, opt)	((fs_info)->mount_opt & \
968 	if (test_bit(BTRFS_FS_CLOSING_START, &fs_info->flags)) {  in btrfs_fs_closing()
969 		if (test_bit(BTRFS_FS_CLOSING_DONE, &fs_info->flags))  in btrfs_fs_closing()
986 	return test_bit(BTRFS_FS_STATE_RO, &fs_info->fs_state) ||  in btrfs_need_cleaner_sleep()
992 	clear_and_wake_up_bit(BTRFS_FS_UNFINISHED_DROPS, &fs_info->flags);  in btrfs_wake_unfinished_drop()
995 #define BTRFS_FS_ERROR(fs_info)	(READ_ONCE((fs_info)->fs_error))
999 			   &(fs_info)->fs_state)))
1007 	return test_bit(BTRFS_FS_STATE_DUMMY_FS_INFO, &fs_info->fs_state);  in btrfs_is_testing()